TY - GEN A1 - Ruiz-Olmo, J. A1 - Saavedra, D. A1 - Jimenez, J. PB - Wiley-Blackwell M3 - Text VL - 253 CY - London PY - 2001 EP - 369 KW - Eurasian otters KW - Lutra lutra KW - Surveys KW - Track censuses KW - Visual T1 - Testing the surveys and visual and track censuses of Eurasian otters ( Lutra lutra ) SP - 359 UR - http://rcin.org.pl/dlibra/publication/69802 ER -